package juc.day02;

import sun.misc.Contended;

import java.util.concurrent.CountDownLatch;

/**
 * @author wang hao
 * @date 2023-03-18 21:54
 *
 *      缓存对齐写法
 */
public class Demo02 {
    public static long COUNT = 100000000L;

    private static class T {
//        private long p1, p2, p3, p4, p5, p6, p7;
//        @Contended
        public long x = 0L;
//        private long p9, p10, p11, p12, p13, p14, p15;
    }

    public static T[] arr = new T[2];

    static {
        arr[0] = new T();
        arr[1] = new T();
    }


    public static void main(String[] args) throws InterruptedException {
        CountDownLatch latch = new CountDownLatch(2);

        Thread t1 = new Thread(() -> {
            for (long i = 0; i < COUNT; i++) {
                arr[0].x = i;
            }
            latch.countDown();
        });

        Thread t2 = new Thread(() -> {
            for (long i = 0; i < COUNT; i++) {
                arr[1].x = i;
            }
            latch.countDown();
        });

        final long start = System.nanoTime();
        t1.start();
        t2.start();
        latch.await();
        System.out.println((System.nanoTime() - start) / 100_0000);

    }

}
